SLF 2250/4000
Hydromatic Stinger
Page - 91 -
© 2014
Maintenance
ATTENTION !
At no time open the water tank suction -, the water tank pump fill
- or the foam compound tank suction valve during purge procedure
(as long as compressed air overpressure is in the piping system).
Compressed air can severely damage the water and foam com-
pound tank. After each purge procedure the compressed air
overpressure must be completely released via the pump drain
valve.
Draining the HYDROMATIC system
- Drain the foam proportioners:
◊
In sequence, completely open and then close again the
individual proportioner valves (J87) / (J87_) on the left and
right side and start purge operation as mentioned before.
◊
Repeat this procedure until the system is drained.
- Drain the foam proportioner of the roof turret:
◊
Choose the highest proportioning rate as described in the "
Roof turret operation - Foam operation" chapter in this
manual
◊
Open the turret dischare valve as mentioned in the "Roof
turret operation - Foam operation" chapter with preset foam
operation.
- Drain the foam compound pressure outlet:
◊
Uncouple the blind couplings on connection (J42).
◊
Open valve (J41).
- Drain the pressure gauge lines on the foam side:
◊
Open flushing valves (J164/2).
- Wait until the entire pump system is drained.
- Close all drain valves, pressure outlets etc. once again.
- Prepare the pump system for the next use.
J164/2
J41
J87
J42
J87hr
J87t
J87s
